Copy to Clipboard Command Sergeant Major Michael J. Coffey criticized Donald Trump (West Point/ Getty Images) On Thursday, January 21, it was reported that the US Army launched an investigation after the unmasking of a supposedly semi-anonymous Twitter account the command sergeant major of West Point Military Academy allegedly used to criticize elected officials and former President Donald Trump. As per reports, this action violated the Uniform Code of Military Justice (UCMJ). In response to a tweet from Vice President Kamala Harris, a now-defunct Twitter account with the handle @mjcoff02 going by âMichael Jâ posted on Inauguration Day: âAs a service member with 28 years active duty and multiple combat deployments, I spent every day wondering what my Commander in Chief would do to me and my unit. I have not slept well for the last 4 years. Iâm sleeping soundly tonight.â